Foldable mattress-frame.



F. M. TINKHAM. FOLPABLE MATTRESS FRAME. APPLICATION FILED um. 1910 Patented Dec. 20, 1910.

WITNESS/IS- of the frames.

nuns star nit sates.

' FRANCIS M.

FOLDABLE MATTRESS-FRAME.

To all whom it may concern:

Be it known that- I, FnANcis M. Tinfuraii, a citizen of the Unit-ed States of America, residing at Springfield, in the county of Hampden and State of Massachusetts, have invented new and useful Foldable Mattress-Frames, lowing is a specification.

This invention relates to improvements in mattresses and is particularly designed for use in connection with spring mattresses of the foldable type.

The object of the invention is to provide a construction in which, when the frames are folded, the woven wire mattress will lie on the outside of the frames.

Many of the constructions in use at the present time fold the woven wire on the inside of the frames so that when the frames are in open position for use, the weight of the user tends to close the frame again; whereas, in my construction, when the frame is opened the weight of the user tends to maintain the frame in open position and against any possible chance of folding to gether and so that the frames are in alinement with each other.

The invention consists, broadly- (1) In pivoting together two frame-like structures of angle-iron on which the woven wire is supported, the pivoted construction consisting, preferably, of a plate of angleiron so as to nest or fit into the angle-irons lhe sidebars which extend longitudinally of the frames arcprovidcd with ears or projections for engaging the side-rail of the bedstead when in use.

(2) In providing a. longitudinal bar or rod member that extends from one connecting plate to the other and which serves the purpose of increasing the rigidity of the finished structure, especially at the center point of the frame. and also prevents the wire fabric from drawing the frame-like structures toward each other.

In the drawings forming part of this aplication,l*igure 1 is a plan view of the improvement showing the same supported on the side-rail of the bedstead in open position. Fig. 2 is an end view of Fig. 1, on the line 2-2 of Fig. l, the right-hand side of the figure imlicating in dotted lines the initial position of one of the frames when starting to fold the same inward. Fig. 3 represents the frames in a folded position and removed from the bedstead for trans of which the fol- Specification of Letters fatent.

Application filed. May 12, 1910.

Improvements in i end-rails to a common plate.

one of the side-bars or braces,

maintain the same in Iatented nee. so, rare.

Serial Ho. 560,882.

portation, or for carrying the same from one room to another. Fig. 4: is a sectional detail on the line M, Fig. 1, the section showing the plate of angle-iron to which the endrails of the frames are pivoted; also one of the tubular bars which extends lengthwise of the frame. Fig. showing clearly the manner of pivoting the Referring to the drawings, a designates other extending longitudinally of the foldable frames.

0 and (l are end-rails, preferably of angleiron, to which the wire fabric e of the wire mattress is attached, the attachment bein made with the horizontal end-rails c and Located midway of the width of the foldable mattress is a plate f of angle-iron to which the inner ends of the end-rails 0 and cl are pivoted, as indicated at g and h.

be noticed that the plate f consists of a short length of angle-iron and nests or fits into- 0 and d,

the right-angle of the two end-rails as clearly shown in Fig. 5, so that the ends 11 and y' of the rails 0 and d rest upon or overlap this plate of angle-iron, as shown.

Attached to the plate f, is abar or brace is, preferably made of tubular material an extending lengthwise of the portable frame which serves to produce a rigid structure at the middle pointof the foldable spring mattress, where y the end-rails c and 01 are prevented from being drawn toward each other by the stretched fabric 6. Ears or projection plates m for supporting the mattress on the bedstead are riveted to the side-bars or braces I) that are adapted to engage the inside rail 0 of the ordinary bedstead frame.

From this construction, it will be seen that when the mattress is in an open position, as in Fig. 2, the weight of the user this open position so that there is no danger of its folding up *hen in use. This will be seen from the fact that the ends i and overlap the ends of the angle-plate f, and when it is desired to fold the mattress, as indicated in Fig. 3, the end-rails c and (Z are folded inward toward each other, as shown by the arrow at in Fig. 2, permitting the coiled s rings 6, or whatever the fabric may be, to old tightly around the outer end-rails 0 and cl, and when the end rails c and (l are in alinement the end portions 1' and 9' rest upon the horizontal tends to 5 is a perspective view Y andb the It will 1 ass A to the :fabric t1 horizontal web f of the angle-plate 7', thus maintainin the end-rails c and a in the same plane.

This construction is one that is convenient to handle and especially to carry up and down stairs in places where the stair-ways or halls are very narrow, and one that is light in weight and yet of great rigidity and strength when in use.

What I claim, is 2 1. In a foldable mattress construction, the combination with the side-bars thereof, of end-rails of angle-iron secured thereto and horizontal web of which the mattress is attached, a plate of angle-iron nested within and below the horizontal webs of the meeting" ends of the end-rails, and to which the end-rails are pivotally connected, whereby when a weight is placed upon the fabric the frame is prevented from folding.

In a foldable s n'ing-n1attress construction having in combination with theangleiron end-rails thereof a plate of angle-iron and to which the cnd-rails are pivotally beeured, and sidebars attached to the endrails, 21 plate secured to the side-bars for supporting the foldable mattress in a bedstead construction, a fabric being secured to the [horizontal web of the end-rails \\'l1er by l when the end-ra ls are folded, the mattress i will fold around the end-rails as described.

; 3. A foldable mattress frame constructimi having in combination with the end-rails I thereof, a fabric secured thereto, of a plate for pii'otally connecting said rails together, the horizontal web of said plate being adapted to support the adjacent; ends of the end-rails when in an open position, and the fabric lying on the outside of the end-rails when in a folded position.

4-. In a foldable mattress construction, the

combination with the side-bars thereof, of e1nl-rails of angle-iron secured thereto and. to the horizontal web of which the mattress fabric is attached,platesofangle-iron nested within and below the horizontal webs of the meeting ends of the end-rails, and to which the end-rails are pivotally connected, where by when a weight is placed upon the fabric the frame is prevented from folding, and a brace-bar connecting the plates of angle- FRANCIS M. TTNKHAM. \Vitnesses K. 1. CLEMONS, HARRY W. Bowen. 

